A61K 31/79
Polymers of vinyl pyrrolidone
A61K31/79 (Polymers of vinyl pyrrolidone) appears on 187 US grants and 231 published applications in this corpus.
Search patents in A61K- Granted patents
- 187
- Published applications
- 231
- Assignees
- 152
- Inventors
- 457
- Latest grant
- 22 Sep 2026
Filings by year
| Year | Granted patents | Published applications |
|---|---|---|
| 1976 | 3 | 0 |
| 1977 | 0 | 0 |
| 1978 | 1 | 0 |
| 1979 | 0 | 0 |
| 1980 | 0 | 0 |
| 1981 | 2 | 0 |
| 1982 | 2 | 0 |
| 1983 | 1 | 0 |
| 1984 | 2 | 0 |
| 1985 | 0 | 0 |
| 1986 | 1 | 0 |
| 1987 | 1 | 0 |
| 1988 | 0 | 0 |
| 1989 | 1 | 0 |
| 1990 | 1 | 0 |
| 1991 | 2 | 0 |
| 1992 | 5 | 0 |
| 1993 | 3 | 0 |
| 1994 | 4 | 0 |
| 1995 | 1 | 0 |
| 1996 | 4 | 0 |
| 1997 | 7 | 0 |
| 1998 | 10 | 0 |
| 1999 | 5 | 0 |
| 2000 | 8 | 0 |
| 2001 | 3 | 1 |
| 2002 | 3 | 3 |
| 2003 | 4 | 9 |
| 2004 | 2 | 6 |
| 2005 | 2 | 6 |
| 2006 | 3 | 7 |
| 2007 | 3 | 3 |
| 2008 | 2 | 8 |
| 2009 | 1 | 7 |
| 2010 | 2 | 9 |
| 2011 | 2 | 6 |
| 2012 | 3 | 8 |
| 2013 | 6 | 12 |
| 2014 | 9 | 16 |
| 2015 | 7 | 15 |
| 2016 | 8 | 9 |
| 2017 | 6 | 13 |
| 2018 | 10 | 16 |
| 2019 | 6 | 11 |
| 2020 | 5 | 13 |
| 2021 | 7 | 12 |
| 2022 | 5 | 10 |
| 2023 | 6 | 13 |
| 2024 | 7 | 7 |
| 2025 | 6 | 5 |
| 2026 | 5 | 6 |
By publication year. Applications have been published since 2001. 2026 runs to 8 Oct.
Recent patents
- Surface treatment of contact lens and treatment of ocular discomfort by water soluble polymers and lipids/liposomes22 Sep 2026US 12,740,942 B2Yeda Research and Development Co. Ltd.
- Synergistic antibacterial activity of medium polarity oils in combination with antibacterial agents on bacterial biofilms31 Mar 2026US 12,588,675 B2Smith & Nephew, Inc.
- Intravenous formulations of RK-3310 Mar 2026US 12,569,499 B2Natsar Pharmaceuticals, Inc.
- Biodegradable, antioxidant, thermally responsive injectable hydrogel and uses therefor10 Feb 2026US 12,544,398 B2University of Pittsburgh—Of the Commonwealth System of Higher Education
- Oral composition and methods6 Jan 2026US 12,514,903 B2Wenzhou Qingcheng Healthcare Tech Ltd.
- Pyropheophorbide Analogues for Therapy and Diagnosis27 Aug 2026US 2026/0248828 A1RMW CHO Group Limited
- Antiseptic compositions and methods23 Jul 2026US 2026/0207657 A1Solventum Intellectual Properties Company
- Formulations of a compound modulating kinases9 Jul 2026US 2026/0191859 A1Plexxikon Inc.
- Metal chelating compositions and methods for controlling the growth or activities of a living cell or organism26 Feb 2026US 2026/0053929 A1Chelation Partners Incorporated
- Ocular lubricant formulations12 Feb 2026US 2026/0041708 A1Harrow IP, LLC
Most cited
By later US patents
- Biofunctional surface modified ocular implants, surgical instruments, medical devices, prostheses, contact lenses and the like367US 6,387,379 B1University of Florida · 2002
- Methods and compositions to treat myocardial conditions129US 7,294,334 B1Advanced Cardiovascular Systems, Inc. · 2007
- Shaped ophthalmic inserts for treating dry eye syndrome123US 4,343,787 AMerck & Co., Inc. · 1982
- Gentle-acting skin disinfectants123US 6,846,846 B2The Trustees of Columbia University in the City of New York · 2005
- Ocular implants and methods for their manufacture112US 4,806,382 AUniversity of Florida · 1989